Spring button fastening



oct. 26 ,41926. www@ W., HATTINGERG SPMNG BUTTON FASTEMNG Filed Das. 5., 1924 Patented Oct. 26, 1926.

WALTER HATTING-BERG, OF MUNICH, GERMANY.

SPRING BUTTON FASTENING.

Application fIed December 5, 1924, Serial No.

The invention relates to fastenings of the kind comprising a socket and a stud which is elastically and frictionally held in the said socket.

The object of the invention is to provide a fastening of this kind which will afford a very secure hold, though of small size.

Some fastenings of the lkind referred to have been constructed heretofore with a resilient tongue retaining the stud in the socket. According to my invention this tongue, or its equivalent, is formed by a retaining ridge which is part of the socket, the latter being in the form of a trough or pocket into which the stud is pushed through an entrance, past the ridge, into the locking chamber, the latter and the ridge conforming to the shape of the stud.

The direction of insertion (assuming the stud to be held above the socket) may be first substantially vertical, and then sub stantially horizontal, as in the case of some of the known spring buttons, or it may be at an angle of less than 900 to the horizontal, the entrance being then, of course, at a higher level than the locking chamber. Preferably th-e lower portion of the female or socket member, which directly receives the upper or male part of the fastener, is formed as a leaf spring, while the upper portion of the socket beyond the ridge is rigid. The more closely the said angle approximates to 900, within the limits allowed by the nature of the device, the shorter will, or may be, the entrance.

Several examples of the improved device are shown in the annexed drawings.

Figs. l and 2 are a cross section ,and a plan view of a socket, and Fig. 8 is a side view of a stud for engaging thesame. n

Figs. 4 and 5 show another construction, Fig. l being a section showing the stud in the socket, and Fig. 5 being a plan view of the socket.

Figs. 6 and 7 are a cross section and a plan view of another' form of the socket, and

Figs. 8 and 9 'are a cross section and a bottom plan view of a stud.

Referring first toy Figs. l to 3, the socket is stamped and pressed out of a plate of springy sheet metal a, with an opening Z) which is narrower at one end than at the other. A portion pressed out of this opening forms a resilient bridge divided trans.- versely by a curved ridge el, across which 754,058, and in Germany September 27, 1923.

to form a retaining ridge CZ conforming to the shape of the stud.

ln the modification shown in'Figs. l and '5 the entrance m is above, and to one side of, the locking chamber n, the general direction of the stud movement, when closing and opening the fastening, being indicated by the double headed arrow z'.

ln the modification shown in Figs. 6 to 9 the entrance m is almost directly above the locking chamber n, the ridge Z being on one of the side walls of the socket.

It will be noted that the fastening is of quite simple construction, and that it can be constructed to afford a good elastic and frictional grip, with a Very short movement of the stud for opening and closing. rilhe stud may be a boss, with a neck, projecting from a small circular plate.

Having now particularly described and ascertained the nature of my said invention and in what mannery the same is to be performed, I declare that what I claim is:

In a spring button fastening, the combi nation with a socket member having a stud receiving opening' wider at one end than at the other and a resilient trough integral with the walls of said opening, a transverse ridge dividing said trough into a locking chamber and an entrance chamber above and laterally of the locking chamber, of a stud member conforming in shape to the locking chamber and the ridge, which ridge holds the stud in its locked position by means of its frictional engagement with one side of the stud and the spring action of the trough in the locking chamber to f-orce the stud against the ridge, said stud being of a size to overlap the other chamber when in either of said chambers.

In testimony whereof I hereunto affix my signature.

VVALTHER HATTINGBERG.

V .ci 

